PAL16L8 IC4 and IC5

IC4.EQN, IC5.EQN, IC4(PAL16L8).JED and IC5(PAL16L8).JED have been taken from cpc-hardware.

I've made IC4(GAL16V8).JED e IC5(GAL16V8).JED files using pal2gal.exe software. Those files have been 
tested in a ATMEL16V8CZ-15 and a LATTICE16v8A-12 with good results.

PAL16R4 IC3

IC3.EQN file has the ecuations I found during my study.
IC3(GAL16V8).JED file can be used in a GAL16V8 (no jed file for old PAL16R4). It has been 
tested in a ATMEL16V8CZ-15, una LATTICE16v8A-12 y una LATTICE16V8-25. It works in all of they 
but my CPC prefers Lattice.